Clean up singleton implementation

xfa/fwl/theme/cfwl_widgettp.h

 // Copyright 2014 PDFium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
 
 #ifndef XFA_FWL_THEME_CFWL_WIDGETTP_H_
 #define XFA_FWL_THEME_CFWL_WIDGETTP_H_
 
 #include <memory>
@@ skipping 75 matching lines @@
   VSepWidth,
   WeekHeight,
   WeekNumHeight,
   WeekNumWidth,
   WeekWidth,
   Width
 };
 
 class CFDE_TextOut;
 class CFGAS_GEFont;
-class CFWL_ArrowData;
 class CFWL_ThemeBackground;
 class CFWL_ThemePart;
 class CFWL_ThemeText;
 class IFGAS_FontMgr;
 class IFWL_Widget;
 
 #if _FXM_PLATFORM_ != _FXM_PLATFORM_WINDOWS_
 class CFX_FontSourceEnum_File;
 #endif
 
@@ skipping 119 matching lines @@
   uint32_t m_dwValue;
   CFX_RectF m_rtMargin;
   uint32_t m_dwThemeID;
   CFX_Matrix _ctm;
 };
 FX_BOOL FWLTHEME_Init();
 void FWLTHEME_Release();
 uint32_t FWL_GetThemeLayout(uint32_t dwThemeID);
 uint32_t FWL_GetThemeColor(uint32_t dwThemeID);
 
-class CFWL_ArrowData {
- public:
-  static CFWL_ArrowData* GetInstance();
-  static FX_BOOL IsInstance();
-  static void DestroyInstance();
-  virtual ~CFWL_ArrowData();
-  void SetColorData(uint32_t dwID);
-
-  class CColorData {
-   public:
-    FX_ARGB clrBorder[4];
-    FX_ARGB clrStart[4];
-    FX_ARGB clrEnd[4];
-    FX_ARGB clrSign[4];
-  } * m_pColorData;
-
- protected:
-  CFWL_ArrowData();
-  static CFWL_ArrowData* m_pInstance;
-};
-
 class CFWL_FontData {
  public:
   CFWL_FontData();
   virtual ~CFWL_FontData();
   FX_BOOL Equal(const CFX_WideStringC& wsFontFamily,
                 uint32_t dwFontStyles,
                 uint16_t wCodePage);
   FX_BOOL LoadFont(const CFX_WideStringC& wsFontFamily,
                    uint32_t dwFontStyles,
                    uint16_t wCodePage);
@@ skipping 21 matching lines @@
 
  protected:
   CFWL_FontManager();
   virtual ~CFWL_FontManager();
 
   static CFWL_FontManager* s_FontManager;
   std::vector<std::unique_ptr<CFWL_FontData>> m_FontsArray;
 };
 
 #endif  // XFA_FWL_THEME_CFWL_WIDGETTP_H_